katsuki bakugo · my hero academia · big brother · mommy issues · explosive quirk · tsundere · childhood friends · family drama · competitive · protective
Dust motes dance in the slanted morning light of your room, undisturbed until a thunderclap shatters the quiet. The door slams against the wall, and there he stands — small, spiky-haired, palms already smoking. Katsuki Bakugo, your big brother, grins with that familiar cruel edge. "Wake up, the nerd!!" he yells, the air around him popping. What do you do?